A Comprehensive Weight-Based Severity Evaluation Method of Voltage Sag in Distribution Networks

Xiaohan Guo, Yong Li, Shaoyang Wang, Yijia Cao, Mingmin Zhang, Yicheng Zhou and Nakanishi Yosuke
Additional contact information
Xiaohan Guo: College of Electrical and Information Engineering, Hunan University, Changsha 410082, China
Yong Li: College of Electrical and Information Engineering, Hunan University, Changsha 410082, China
Shaoyang Wang: College of Electrical and Information Engineering, Hunan University, Changsha 410082, China
Yijia Cao: College of Electrical and Information Engineering, Changsha University of Science and Technology, Changsha 410114, China
Mingmin Zhang: College of Electrical and Information Engineering, Hunan University, Changsha 410082, China
Yicheng Zhou: Graduate School of Environment and Energy Engineering, Waseda University, Tokyo 169-8050, Japan
Nakanishi Yosuke: Graduate School of Environment and Energy Engineering, Waseda University, Tokyo 169-8050, Japan

Energies, 2021, vol. 14, issue 19, 1-13

Abstract: With the increasing use of sensitive loads in frequency converters and in relays in distribution networks, voltage sag has become a major power quality issue that urgently needs to be solved. For the purpose of improving the understanding of voltage sag severity in distribution networks, a comprehensive weight-based severity evaluation method of voltage sag is presented in this paper. First, a multi-side index system that takes into account the combined influence of the source, network, and the load is established. A comprehensive weight method, which combines the improved analytic hierarchy process (IAHP) and the entropy method, is then adopted to determine the index weight. The weight of each index and the degree of superiority are linearly weighted to obtain the severity of voltage sag at different observation points. Finally, the effectiveness of the proposed method is verified using a distribution network model established in DIgSILENT PowerFactory (15.1.7, Gomaringen, Germany).

Keywords: voltage sag; index evaluation; analytic hierarchy process; entropy method; severity evaluation (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

Downloads: (external link)
https://www.mdpi.com/1996-1073/14/19/6434/pdf (application/pdf)
https://www.mdpi.com/1996-1073/14/19/6434/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:14:y:2021:i:19:p:6434-:d:651862

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().